Q : So you have to physically connect (K-Line) or disconnect (DCAN) pin 7&8?Ī : Yes, I think connection by soldering is a bad option as it limits the usefulness of the interface, I have an adapter but consider a switch to be a better option. How to use/switch/connect to K-Line or Dcan pin 7&8?

Mount a small switch on the OBD plug end of your adapter, which can bridge (for K line) or separate (for DCAN) the connection between pins 7 & 8.

Use an adapter (such as the one sold by One Stop electronics) which internally bridges pins 7 & 8 or….

The 2 most sensible options are both hardware-related:. I assume the reasons being that on DCAN cars one pin is used for a ethernet connection and the other to the K data line – on K line cars, both pins are connected to K data lines and that creating a switch mode circuit would cost more than the interface is worth.

New K+Dcan cable with a switch and FT232RQ chip: The switch on this cable to LEFT is for 7 pin, to RIGHT for 8 pinĨ pin for K-LINE communication (old DCAN cables cannot do it) for BMW from 1998 to 2008 It’s a BMW K+Dcan usb cable, the 2018 version.Ī new switch is added, compared to the traditional Dcan cable.

K dcan cable with switch